Many white Americans are frightened to core because
A. the number of immigrants will exceed that of American natives by 2050.
B. immigrants will account for a large part of the population by 2050.
C. immigrants will populate the USA, including those remote communities.
D. the young immigrants will increase obesity and criminality in America.
查看答案
地震时,蹲在暖气片旁边比较安全,因为暖气管道形成网络性结构,不易被拉断。()